USER GUIDE
CONTROLLER
Contents
Basic Operations.............................................................. 2
Controller’s Faceplate..................................................... 2
Turning the Controller On and Off................................... 2
Calibrating the Transducer.............................................. 6
Operating the Valve Manually.......................................... 7
Status Display................................................................. 2
Controller Reports............................................................ 7
Program Function and Report Reference...................... 3
Troubleshooting................................................................ 8
Program Functions......................................................... 3
Controller Display Problems........................................... 8
Reports........................................................................... 3
Program Cycle Problems................................................ 9
Setting Program Functions.............................................. 3
How Plunger Operation Works........................................ 4
Solenoid (Shift Valve) Problems.................................... 11
Preventive Maintenance................................................ 11
Creating a Plunger Operation Program.......................... 4
Program Setup Functions............................................... 4
Program Control Functions............................................. 4
Pressure Safeguard Features......................................... 5
©2009 Production Control Services, Inc.
pcslift.com
PCS HIGH-LOW TIMER CONTROLLER
PCS HIGH-LOW TIMER
™
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
Basic Operations
Controller’s Faceplate
Figure 1 shows the controller’s faceplate with the power on/off switch, status display, and keypad.
Current
well status
Time remaining
in hrs.:min.:sec.
1-800-619-2241
pcslift.com
Low pressure
setting
DISPLAY STATUS
High pressure
setting
HRS:MIN:SEC
CLOSE
00:04:35
0125
0175 0250
Current
pressure
LOW PSI
SETTING
CURRENT
PSI
Opens valve
HIGH PSI
SETTING
Closes valve
Increases values
OPEN
Moves cursor between
hrs., min., and sec.
CLOSE
SET
Moves cursor between
hrs., min., and sec.
HIGH
Sets program functions
Calibrates transducer
for high pressure
POWER
Decreases values
Power
On/Off
CALIBRATE
CLEAR
READ
LOW
ON/OFF
CONTROLLER WILL RESUME TO CURRENT STATUS
AFTER 90 SECONDS.
Calibrates transducer
for low pressure
THIS CONTROLLER IS MANUFACTURED BY PCS, INC.
Calibrates
transducer
Displays reports
Clears report values
Figure 1 – Controller’s Faceplate
Turning the Controller On and Off
Status Display
To turn the PCS High-Low Timer Controller on or off, insert
a screw driver into the slot marked POWER ON/OFF. See
Figure 1.
After you turn the PCS High-Low Timer Controller on, the
status display remains on. The controller never sleeps.
Move the toggle switch to the left to turn the controller on.
Move the toggle switch to the right to turn the controller off.
The first line of the status display shows the currently
running program function and the time remaining.
Example:
CLOSE 00:00:00
The second line of the status display shows the low
pressure setting, the current pressure, and the high
pressure setting.
Example:
0125 0175
2
0250
USER GUIDE
Setting Program Functions
The tables in this section cross-reference the program
functions and reports described in this User Guide.
Program Functions
To program these functions, press SET parameter.
To display their current values, press READ parameter.
Program Function
SET or
READ
Display Name
OPEN TIME
OPEN
OPEN
4
CLOSE TIME
CLOSE
CLOSE
4
MAND-SI
5
DELAY
4
SENSOR
4
HIGH PRES
5
MANDATORY
SHUT-IN TIME
ð

DELAY TIME (SALES)
Sensor Operation
HIGH CLOSE PRESSURE
HIGH
HIGH OPEN
Page
HIGH OPEN
LOW CLOSE PRESSURE
LOW
LOW OPEN
LOW PRES
5
LOW OPEN

DELAY CLOSE TIME
DEL-CLS
6
1 Press SET and the button for the function you want to
program.
Example: SET OPEN.
The status display shows the function and its current
value.
Example for time function:
OPEN 00:00:00
Example for pressure function:
HIGH PRES
0250
2 If you are programming a time function, the cursor
is at the hour value. Use the
and
buttons to
move the cursor back and forth between the values for
hours, minutes, and seconds.
ð
ð


Note: The
and
buttons are inactive while you
program a pressure function.
3 For both time and pressure functions, press the
button to increase the value or the
button to
decrease the value.


 
Press and quickly release the
or
button to
increase or decrease the value by 1. Press either
button without releasing it to make a big change in the
value.
Reports
To display these reports, press READ parameter.
Report
Software Version Report
READ
Page
CLEAR
7

7
Valve and Plunger Counts History
Valve Total Time Report
4 When you have programmed the value you want, press
SET to store the value.
To exit the function without changing its value, press
CLEAR.
Battery and Solar Panel Status Report
Plunger Travel Time History
Clearing Report Values
Program Function
SET
Display Name
Clear Valve and Plunger
Counts History and
Valve Total Time Report

PRESS CLEAR TO
CLEAR ALL TOTALS
Page
7
3
PCS HIGH-LOW TIMER CONTROLLER
Program Function and Report
Reference
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
How Plunger Operation Works
1 The controller closes the valve to shut in the well and
counts down the CLOSE TIME (SET CLOSE). This
gives the plunger time to fall to the bottom of the well.
Creating a Plunger Operation
Program
Program Setup Functions

2 When the CLOSE TIME countdown reaches zero, the
controller opens the valve.
Sensor Operation = ☛ SET
3 The controller counts down the OPEN TIME (SET
OPEN).
ƒƒ If the plunger arrives during the OPEN TIME
countdown, the controller goes to step 4.
ƒƒ If the plunger does not arrive during the OPEN TIME
countdown, the controller closes the valve and
counts down the MANDATORY SHUT-IN TIME (SET
CLOSE). When this countdown reaches zero, the
controller opens the valve and repeats step 3.
If you set the sensor to OFF, the controller goes directly
from OPEN TIME to CLOSE TIME. It does not go from
OPEN TIME to DELAY TIME (SALES). The controller does
count plunger arrivals for the Plunger Travel Time History.
Note: If connected to a pressure switch, the controller
closes the well when it receives a pressure input.
Pressure input overrides the OPEN TIME countdown.
4 The controller counts down the DELAY TIME (SALES)
(SET
). When the DELAY TIME (SALES) countdown
reaches zero, the controller goes back to step 1.
ð
Note: If the controller is connected to a pressure switch,
pressure input overrides the DELAY TIME (SALES)
countdown.
Set the sensor to ON.
Transducer Calibration
See “Calibrating the Transducer” on page 6.
Program Control Functions
CLOSE TIME = ☛ SET CLOSE
CLOSE TIME is when the well is shut-in and not flowing. It
is also when the plunger falls, and the well builds pressure
for the next cycle.
Important! You must have a CLOSE time. Do not program
00:00:00 as the CLOSE time.
Note: Following CLOSE TIME, a status display for
MANDATORY SHUT-IN TIME appears. See “MANDATORY
SHUT-IN TIME” on page 5 for more information.
OPEN TIME = ☛ SET OPEN
OPEN TIME is when the well is first opened, and gas is
flowing through the motor valve. During OPEN TIME, the
plunger starts to surface and the well sells its initial head
gas.
DELAY TIME (SALES) = ☛ SET
ð
DELAY TIME (SALES) sells gas through the valve after the
plunger has arrived.
4
USER GUIDE
If the valve is opened, but a plunger does not surface, the
well likely needs more time to rebuild pressure for the next
plunger attempt.
1 To set MANDATORY SHUT-IN TIME,
press SET CLOSE.
The status display shows the CLOSE TIME.
2 Press CLEAR.
The status display shows the MANDATORY SHUT-IN
TIME in hours, minutes, and seconds.
3 Set the MANDATORY SHUT-IN TIME to at least twice
the time required to build enough pressure to surface
the plunger. For example, if a well usually takes 2 hours
to build enough pressure to surface the plunger, set
MANDATORY SHUT-IN TIME to 4 hours or more.
Note: MANDATORY SHUT-IN TIME must be greater
than CLOSE TIME. If the plunger does not surface,
MANDATORY SHUT-IN TIME replaces CLOSE TIME.
MANDATORY SHUT-IN TIME is not in addition to
CLOSE TIME.
If you are not using MANDATORY SHUT-IN TIME, set it
to 00:00:00.
Pressure Safeguard Features
HIGH CLOSE PRESSURE AND HIGH
OPEN PRESSURE= ☛ SET HIGH
When the pressure reaches the HIGH CLOSE PRESSURE
set point, the controller prevents the valve from opening
and closes the valve if it is open.
The controller prevents the valve from opening until the
pressure drops to the HIGH OPEN PRESSURE set point.
Example: The HIGH CLOSE PRESSURE setting is 250
psi, and the HIGH OPEN PRESSURE setting is 200 psi.
The controller closes the valve when the pressure reaches
a high of 250 psi. The controller waits until the pressure
drops to 200 psi to open the valve.
PCS HIGH-LOW TIMER CONTROLLER
MANDATORY SHUT-IN TIME = ☛ SET CLOSE Optional
If you don’t want the controller to monitor high pressure,
set HIGH CLOSE PRESSURE and HIGH OPEN
PRESSURE to 9999 psi.
To set the HIGH CLOSE PRESSURE and HIGH OPEN
PRESSURE:
1 Press SET HIGH.
The status display shows:
HIGH PRES
0250
 
2 Press
or
to change the HIGH CLOSE
PRESSURE value.
3 Press SET to store the value.
The status display shows:
HIGH OPEN
0200
 
4 Press
or
to change the HIGH OPEN
PRESSURE value.
5 When you are done, press SET to store the value.
LOW CLOSE PRESSURE AND LOW
OPEN PRESSURE = ☛ SET LOW
When the pressure reaches the LOW CLOSE PRESSURE
set point, the controller prevents the valve from opening
and closes the valve if it is open.
The controller prevents the valve from opening until the
pressure rises to the LOW OPEN PRESSURE set point.
Example: The LOW CLOSE PRESSURE is 125 psi, and
the LOW OPEN PRESSURE is 135 psi. The controller
closes the valve when the pressure reaches a low of 125
psi. The controller waits until the pressure reaches 135 psi
to open the valve.
If you don’t want the controller to monitor low pressure,
set LOW CLOSE PRESSURE and LOW OPEN PRESSURE
to 0 psi.
5
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
To set the LOW CLOSE PRESSURE and LOW OPEN
PRESSURE:
The controller uses a transducer to monitor pressure.
1 Press SET LOW.
Calibrate Transducer for Low
Pressure = ☛ CALIBRATE LOW
The status display shows:
LOW PRES
0125
1 With the transducer in place, remove pressure.
 
2 Press
or
to change the LOW CLOSE
PRESSURE value.
3 Press SET to store the value.
The status display shows:
LOW OPEN
0135
4 Press
value.
5 When you are done, press SET to store the value.

If you are using HIGH CLOSE PRESSURE, LOW CLOSE
PRESSURE, or both, you can use DELAY CLOSE TIME
to keep the controller from shutting in the well if there is
a brief spike or drop in pressure. Brief spikes in pressure
often occur when the controller opens the well after an
extended shut-in period.
When the controller opens the valve, it does not close
the valve in response to pressure input during the DELAY
CLOSE TIME period.
Example:
„„ DELAY CLOSE TIME is set at 6 minutes.
„„ When the controller opens the well and starts to count
down the OPEN TIME, there is a 3 to 5 minute spike in
pressure.
„„ For the first 6 minutes of the OPEN TIME countdown,
the controller does not shut in the well even if the HIGH
CLOSE PRESSURE is reached.
„„ After 6 minutes, the controller shuts in the well if the
high pressure condition still exists.
If you are not using the pressure safeguard features, set
DELAY CLOSE TIME to 00:00:00.
6
2 Press CALIBRATE.
The status display shows:
CALIBRATE XDUCER
3 Press LOW.
 or  to change the LOW OPEN PRESSURE
DELAY CLOSE TIME = ☛ SET
Calibrating the Transducer
The status display shows:
TRANSDUCER ZERO?
UP=YES
DOWN=NO
4 Press
.
Calibrate Transducer for High
Pressure = ☛ CALIBRATE HIGH
1 Apply pressure to the transducer.
2 Press CALIBRATE.
The status display shows:
TRANSDUCER ZERO?
3 Press HIGH.
The status display shows:
0000
TRANS PRESSURE
4 After applying pressure, measure with an accurate
pressure gauge to obtain the pressure value for the
next step.
5 Press
 or  to enter the pressure value.
6 Press SET.
USER GUIDE
Open the Valve = ☛ OPEN
„„ Press OPEN.
If the current pressure is out of range, the controller either:
„„ Closes the valve immediately, or
„„ If a DELAY CLOSE TIME is set, goes to DELAY CLOSE
TIME.
Close the Valve = ☛ CLOSE
In this example, the total valve open time is 16 hrs.,
31 min., 13 sec. The total valve close time is 40 hrs.,
21 min., 50 sec.
Battery Status Report
This report shows the current voltage of the battery.
Example: BATTERY: 6.34
„„ Press CLOSE.
CLOSE overrides all programmed functions such as
OPEN TIME and DELAY TIME (SALES).
Plunger Travel Time History
This report provides information about the 10 most recent
plunger travel times.
Use the READ button to scan through the report.
Controller Reports
Display Reports = ☛ READ
Example:
TOT OPN016:31:13
TOT CLS040:21:50

1 To display 4 of the the PCS High-Low Timer
Controller’s 5 reports, press READ
.

The status display shows the first report: Valve and
Plunger Counts History.
2 To display each of the next 3 reports, press READ
again.
3 After you have displayed the last report, Plunger Travel
Time History, press READ to display the current well
status.
Valve and Plunger Counts History
„„ PLT-0 shows the most recent plunger run during OPEN
TIME.
„„ PLT-1 shows the 2nd most recent plunger run during
OPEN TIME.
„„ PLT-9 shows the 10th most recent plunger run during
OPEN TIME.
„„ PLT-0 NO PLUNGER shows the most recent plunger
run: the plunger did not surface.
The time shows how long the plunger took to surface.
Example: PLT-0
000:08:15
In this example, the plunger surfaced after 8 minutes and
15 seconds of OPEN TIME.
This report shows how many times the valve opened and
how many times the plunger arrived while the valve was
open.
Software Version Report = ☛ READ CLEAR
Example:
VALVE CNT:
PLUNGER:
Example: VERSION
0013
0010
In this example, the valve opened 13 times, and the
plunger arrived 10 times while the valve was open.
Valve Total Time Report
This report shows 2 times of up to 999 hrs., 59 min., 59
sec. accumulated since the report was last cleared:
„„ TOT OPN: Total time that the valve was open. OPEN
TIME, DELAY TIME (SALES), and DELAY CLOSE TIME
are accumulated under TOT OPN time.
„„ TOT CLS: Total time that the valve was closed.
CLOSE TIME and MANDATORY SHUT-IN TIME are
accumulated under TOT CLS time.
This report displays the chip and software version
numbers.
126-04
Clear Report Values = ☛ SET

1 To clear the Valve and Plunger Counts History, and the
Valve Total Time Report, press SET
.

The display status shows:
PRESS CLEAR TO
CLEAR ALL TOTALS
2 Press CLEAR.
Note: To return to the current well status without
clearing report values, press READ.
7
PCS HIGH-LOW TIMER CONTROLLER
Operating the Valve Manually
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
Troubleshooting
If you have a problem with the controller, try these
troubleshooting tips. If they don’t solve the problem, call
your PCS sales and service representative.
Controller Display Problems
Controller won’t turn on or controller’s display is blank
The controller never sleeps. The display should never be
blank while the controller is on.
1 With a screwdriver, move the power switch to off (see
page 2).
2 Wait a few seconds and then move the power switch
back to on.
If the display remains blank, go to Test 1.
Test 1: Check fuse.
1 With a screwdriver, move the power switch to off.
2 Remove the controller’s faceplate.
3 Remove the fuse from its yellow casing.
ƒƒ If the fuse is defective, replace it with a 5 amp, 250
volt fuse. The controller’s box contains 1 extra fuse.
When you are done, replace the controller’s
faceplate and move the power switch to on.
ƒƒ If the fuse is OK, go to Test 2.
Test 2: Check batteries and wire connections.
The battery life is approximately 1 to 3 years.
The controller has a safety feature. If the battery voltage is
low, the controller closes the motor valve and shuts in.
1 Check the battery voltage with a volt meter.
Replace the battery if it is below 6 volts.
2 Check the battery wires for loose connections.
3 Replace the controller’s faceplate.
4 With a screwdriver, move the power switch to on.
ƒƒ If the display is still blank, call your PCS sales and
service representative.
5 If the controller’s display is now working and if you
replaced the battery, check the manufacture date on
the battery. If the battery is less than 3 years old, check
the solar panel. Go to Test 3.
8
Test 3: Check solar panel.
1 Disconnect the solar panel from the terminals. Use a
volt meter to obtain the voltage and amperage. A good
solar panel reading in full sun exposure is 10.7 volts
and 350-430 mA.
2 If the solar panel is defective, change it.
3 Check the solar panel installation.
ƒƒ The solar panel should face south.
ƒƒ The tilt of the solar panel should be the latitude
of the location plus 15 degrees. Example: if the
latitude is 45 degrees, tilt the solar panel 60 degrees
with respect to the horizon.
ƒƒ The element should be free from dirt, oil, and so on.
ƒƒ Check for cracks in the solar panel.
ƒƒ Check whether the solar panel is shaded during any
part of the day. If it is, re-position it to receive the
most sunlight each day.
4 Check the solar panel wire connection.
5 Make sure the power switch is on. The controller’s
display should be on.
6 If the solar panel tests good, but the batteries are not
lasting as long as they should, call your PCS sales and
service representative.
Controller’s display is scrambled
Static electricity may have made the controller lose its
place in the program cycle.
1 With a screwdriver, move the power switch to off (see
page 2). Wait a few seconds and then move the power
switch back to on.
2 If the display is still scrambled after this test, call your
PCS sales and service representative.
USER GUIDE
Controller won’t run program cycle or won’t open
motor valve
Test 1: Check battery and wire connections.
The battery life is approximately 1 to 3 years.
The controller has a safety feature. If the battery voltage is
low, the controller closes the motor valve and shuts in.
1 Press READ
READ READ and check the battery’s
voltage.
Replace the battery if it is below 6 volts.
2 With a screwdriver, move the power switch to off (see
page 2).
3 Remove the controller’s faceplate.
4 Check the battery wires for loose connections.
5 Make sure the fuse is good.
6 Replace the controller’s faceplate.
7 With a screwdriver, move the power switch to on.
8 Press OPEN and CLOSE a few times to make sure the
solenoid is shifting.
ƒƒ If the controller is now operating properly and if you
replaced the battery, check the manufacture date
on the battery. If the battery is less than 3 years old,
check the solar panel. Go to Test 2.
ƒƒ If the controller still won’t run the program cycle
or open the motor valve, go to Test 3.

Test 2: Check solar panel.
1 Disconnect the solar panel from the terminals. Use a
volt meter to obtain the voltage and amperage. A good
solar panel reading in full sun exposure is 10.7 volts
and 350-430 mA.
2 If the solar panel is defective, change it.
3 Check the solar panel installation.
ƒƒ The solar panel should face south.
ƒƒ The tilt of the solar panel should be the latitude
of the location plus 15 degrees. Example: if the
latitude is 45 degrees, tilt the solar panel 60 degrees
with respect to the horizon.
ƒƒ The element should be free from dirt, oil, and so on.
ƒƒ Check for cracks in the solar panel.
ƒƒ Check whether the solar panel is shaded during any
part of the day. If it is, re-position it to receive the
most sunlight each day.
4 Check the solar panel wire connection.
5 Make sure the power switch is on. The controller’s
display should be on.
6 If the solar panel tests good, but the batteries are not
lasting as long as they should, call your PCS sales and
service representative.
Test 3: Check solenoid (shift valve).
1 Press OPEN.
2 If the solenoid won’t open, clean the supply hoses and
puck inside the solenoid valve.
3 Retest.
4 If they are good, replace the puck or the entire
solenoid.
Test 4: Check gas supply pressure, filter, and regulator(s).
1 Check the gas supply pressure to the motor valve.
The recommended supply pressure is 25-35 psi.
If the pressure is too low or too high, it will not open
the motor valve.
2 Check the filter and regulator(s) for debris and ice.
3 If the controller is still not working properly, call your
PCS sales and service representative.
After CLOSE TIME has counted down to zero, controller
goes directly to DELAY TIME (SALES)

„„ Press READ
READ READ READ to check the
Plunger Travel Time History. If the display shows a
few seconds of plunger travel time, such as PLT-0
00:00:03, the controller went through the opening and
closing part of the program even though the plunger
did not arrive.
Test 1: Check the sensor wire connections.
1 If a wire was spliced in because of the distance
between the controller and the sensor, check the
connection where the wire was spliced. The wire may
be corroded and causing a short.
2 If the sensor wire connections are good, go to Test 2.
Test 2: Check controller by disconnecting the sensor.
1 Remove the controller’s faceplate.
2 Disconnect the sensor’s wires from the terminals on
the inside of the controller’s faceplate:
ƒƒ Disconnect the black wire from the GND terminal.
ƒƒ Disconnect the green wire from the AUX terminal.
3 Press OPEN. The controller should count down the
OPEN TIME.
ƒƒ If the controller goes from OPEN TIME to DELAY
TIME (SALES), the controller’s circuit board is not
working properly. Call your PCS sales and service
representative.
ƒƒ If the controller does not go to DELAY TIME
(SALES), continue with the next step.
4 Use a wire to short the AUX and GND terminals. The
controller is OK if it goes to DELAY TIME (SALES).
5 Reconnect the sensor to the terminals. Make sure the
wires are connected correctly.
6 Replace the controller’s faceplate.
9
PCS HIGH-LOW TIMER CONTROLLER
Program Cycle Problems
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
Test 3: Check plunger.
1 Check whether the plunger is stuck in the lubricator.
2 If the plunger is not stuck in the lubricator, go to Test 4.
Test 4: Check the sensor.
1 Remove the sensor from the wellhead.
2 Press OPEN.
ƒƒ If the controller counts down the OPEN TIME, go to
step 3.
ƒƒ If the controller goes straight into DELAY TIME
(SALES), there is a short. Either the wire going
to the controller is bad, or the sensor must be
replaced. Go to step 5.
3 Hold the sensor in your hand, and move a steel wrench
through the sensor band.
ƒƒ If the controller goes to DELAY TIME (SALES), the
problem may be a wellhead electrical current.
ƒƒ Go to step 4.
4 Possible causes of a wellhead electrical problem:
ƒƒ The sensor or sensor wire may be defective, or
ƒƒ The well may need the newest version of PCS’
2-coil sensor. This sensor is available in 2-wire or
3-wire connections.
5 Call your PCS sales and service representative.
Plunger has surfaced, but OPEN TIME does not go to DELAY
TIME (SALES)

„„ Make sure sensor is turned on: Press READ
. The
controller’s display should show SENSOR: ON.
ƒƒ If the display shows SENSOR: ON, go to Test 1.
ƒƒ If the display shows SENSOR: OFF, press SET
and then press
. Go to Test 2, step 2.

10

Test 1: Check controller by disconnecting the sensor.
1 Remove the controller’s faceplate.
2 Disconnect the sensor’s wires from the terminals on
the inside of the controller’s faceplate:
ƒƒ Disconnect the black wire from the GND terminal.
ƒƒ Disconnect the green wire from the AUX terminal.
3 Press OPEN. The controller should count down the
OPEN TIME.
ƒƒ If the controller goes from OPEN TIME to DELAY
TIME (SALES), the controller’s circuit board is not
working properly. Call your PCS sales and service
representative.
ƒƒ If the controller does not go to DELAY TIME
(SALES), continue with the next step.
4 Use a wire to short the AUX and GND terminals. The
controller is OK if it goes to DELAY TIME (SALES).
5 Reconnect the sensor to the terminals. Make sure the
wires are connected correctly.
6 Replace the controller’s faceplate.
Test 2: Check sensor.
1 Press OPEN.
2 Run a steel wrench along the back of the sensor.
ƒƒ If the controller goes to DELAY TIME (SALES), the
sensor is OK.
ƒƒ If the controller does not go to DELAY TIME
(SALES), call your PCS sales and service
representative.
Test 3: Check sensor alignment.
1 Realign the sensor by 90 degrees.
Example: If the sensor is aligned on the north or south
side, realign it on the east or west side.
2 If realigning the sensor does not solve the problem, call
your PCS sales and service representative.
USER GUIDE
Solenoid (shift valve) does not operate at any time or does
not operate at night
If the solenoid does not operate at night, the solar panel
may be powering the controller during the day.
Test 1: Check batteries and wire connections.
The battery life is approximately 1 to 3 years.
The controller has a safety feature. If the battery voltage is
low, the controller closes the motor valve and shuts in.
1 Press READ
READ READ and check the battery’s
voltage.
Replace the battery if it is below 6 volts.
2 Check the battery wires for loose connections.
3 Make sure the fuse is good.
4 Replace the controller’s faceplate.
5 With a screwdriver, move the power switch to on.
6 Press OPEN and CLOSE a few times to make sure the
solenoid is shifting.
ƒƒ If the solenoid is now operating properly and if you
replaced the battery, check the manufacture date
on the battery. If the battery is less than 3 years old,
check the solar panel. Go to Test 2.
ƒƒ If the solenoid still does not operate, go to Test 3.

Test 2: Check solar panel.
1 Disconnect the solar panel from the terminals. Use a
volt meter to obtain the voltage and amperage. A good
solar panel reading in full sun exposure is 10.7 volts
and 350-430 mA.
2 If the solar panel is defective, change it.
3 Check the solar panel installation.
ƒƒ The solar panel should face south.
ƒƒ The tilt of the solar panel should be the latitude
of the location plus 15 degrees. Example: if the
latitude is 45 degrees, tilt the solar panel 60 degrees
with respect to the horizon.
ƒƒ The element should be free from dirt, oil, and so on.
ƒƒ Check for cracks in the solar panel.
ƒƒ Check whether the solar panel is shaded during any
part of the day. If it is, re-position it to receive the
most sunlight each day.
4 Check the solar panel wire connection.
5 Make sure the power switch is on. The controller’s
display should be on.
6 If the solar panel tests good, but the batteries are not
lasting as long as they should, call your PCS sales and
service representative.
Test 3: Check solenoid (shift valve).
1 Press OPEN.
2 If the solenoid won’t open, clean the supply hoses and
puck inside the solenoid valve.
3 Retest.
4 If they are good, replace the puck or the entire solenoid.
Preventive Maintenance
Battery
Always replace the controller’s battery when it is 3 years old.
11
PCS HIGH-LOW TIMER CONTROLLER
Solenoid (Shift Valve) Problems
PCS HIGH-LOW TIMER CONTROLLER
USER GUIDE
You can get more information
about the PCS products at: pcslift.com
3771 Eureka Way
Frederick, CO 80516
1.800.619.2241
Warranty: Production Control Services, Inc. warrants all PCS manufactured equipment to be free of defects in material and workmanship for ONE YEAR from
date of purchase by original buyer only. Warranty is completely void if abuse, neglect, misuse or misapplication is the cause of the malfunction. Determination
of abuse or damage to be made solely by PCS.
PCS HIGH-LOW TIMER™ is a trademark of Production Control Services, Inc.
Copyright ©2009 Production Control Services, Inc.
All rights reserved. 2/6/09